Has anyone installed one of these on their Blazer? If so, what kind of gain did you see?

 

Tornado

You'll get the gist of it reading through the first few threads in that search. I wouldn't recommend them, especially on a newer fuel injected vehicle.

 

don't do it... they do not work!I had one given to me for my blazer, actually decreased my gas mileage by 1mpg......... Took it out after 3 weeks.. ill sell you mine if you just have to try it, and I havent thrown it away..

 

I think they are a waste of money except on carbuerated engines. My granny had one on her Aerostar van and it worked well, but its a different story with the vortec fuel injected engine/

 

the tornado does what the Vortec design already does... so its pointless on a vortec

 

Thanks for the info!